As if the various other permutations and teensyness of RFID weren't wild enough, here comes Hitachi with its new "powder" 0.05mm x 0.05mm RFID chips. The new chips are 64 times smaller than the previous record holder, the 0.4mm x 0.4mm mu-chips, and nine times smaller than Hitachi's last year prototype, and yet still make room for a 128-bit ROM that can store a unique 38-digit ID number. The main
![Hitachi's RFID powder freaks us the heck out](https://cdn-ak-scissors.b.st-hatena.com/image/square/29625dac5a9db222f6c864a7bac13ee9f1d7106f/height=288;version=1;width=512/https%3A%2F%2Fs.yimg.com%2Fuu%2Fapi%2Fres%2F1.2%2Fkn6JjrNFSGuK2zlwvouPow--~B%2FZmk9ZmlsbDtoPTYzMDtweW9mZj0wO3c9MTIwMDthcHBpZD15dGFjaHlvbg--%2Fhttps%3A%2F%2Fwww.blogcdn.com%2Fwww.engadget.com%2Fmedia%2F2007%2F02%2Fhitachi-rfid-powder.jpg.cf.jpg)